Builder saying he doesn't want to put my trim tile in here. When having to put it up on the wall or measure it for size, you will find that you can get the exact measurements you need without much trouble. In the worst case, it's OK to cut the Kerdi, remove the damaged section, scrape up the thinset from the areas, and set a new piece of Kerdi. link to How To Organize A Bathroom Closet. This is confusing since Kerdi Board has no Kerdi on it. http://www.schluter.com/schluter-us/en_US/Shower-System/KERDI-SHOWER-KIT/Schluter%C2%AE-KERDI-SHOWER-KIT/p/KERDI_SHOWER-KIT, We've added a "Necessary cookies only" option to the cookie consent popup. Cement board is a bit better, but you need to spray either one before applying the mortar so that it doesn't "skin over" before you can get the Kerdi up. Let's start! Are there tables of wastage rates for different fruit and veg? Once all that is completed and the Aquadefense has dried, you can install your tile with a polymer modified mortar meeting the ANSI requirements of A118.4 or A118.11. The kerdi membrane will probably do the same, and its regularly installed over drywall which is probably less stable. Waterproof showers are the trend today, so RedGard is an excellent alternative to cement boards that act as vapor barriers. We are still most comfortable with full plumber's pan over the curb, including glue-on preformed corners, and also a second layer (usually Kerdi but can be paint-on) on top of CBU wrap over curb. Additionally, the use of modified thinset with KERDI could lead to cracks and other issues down the line as the modified thinset can shrink and pull away from the KERDI membrane over time. Any competent tile contractor would float the wall in mortar giving you a stronger, level, perfectly flat, and square surface to properly install tile. We store towels, medicine, toiletry supplies, first-aid gear, massage devices, facial steamers, spare Painting your garage is a great way to improve the look of the space and make the walls easier to clean. I've never had a failure. For the floor I make a dry mix mud base and then the Kerdi membrane. Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. To line niche shelves, for instance. How should I transition between cement board floor and alcove tub? The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. The most important thing to remember when applying the membrane over the cement board is to make sure the surface is clean and free of any debris, dust or other contaminants. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. The Kerdi-Line prefab pans and drains make me feel way more comfortable with the waterproofing. In order to determine which tile underlayment is right for your project, you need to know which issue youre trying to solve whether its preventing subfloor cracks from transferring to the tile, soundproofing, moisture protection, or providing more rigidity to the tile. This is often accomplished by filling any holes and cracks in the wall with appropriate spackling or patching material. The tub flange can really be a pain in the butt when installing a tile tub surround. Thinset with a latex acrylic modifier is best for interior projects, but if youre installing outdoors, you should use thinset with a polymer modified (PM) compound for greater moisture resistance. that's home depot homeowner installation method. ! These multifunctional tile substrate and building panels are thus perfect for creating bonded waterproofing assemblies with tile coverings. Kerdi Board is suitable for a number of interior applications. Sledge hammers for the floor, that might take a bit of time. Waterproofing cement board is relatively simple and there are several different waterproofing products available. This feature makes building the base structure much easier and more cost . Installation instructions vary depending on the type of Kerdi membrane being used, but typically the membrane is applied directly to a clean, dry plywood surface that is free from dust, dirt, and other debris. That means that you do not have to rely on a surface membrane or worry about the board failing if the core is exposed to water. No, you do not need to install a vapor barrier, as Kerdi Board is the vapor barrier. I posted a plea for help and Mongo and Bill both gave me good advice. This is necessary to ensure that the membrane will adhere properly to the drywall. Yes, KERDI membrane will stick to cement board. Glass mat gypsum board is a better choice. If done according to manufacturers instructions, it will seal nicely. . 173 upvotes. Go with smaller bags or only mix half. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. x 33 ft. Waterproofing Membrane: Kerdi-Board 1/2 in. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. @DMoore- OK, I agree that with redguard it would be redundant. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Kerdi board is a kind of waterproofer because these kinds of boards are made of XPS foam. Jessica considers herself a home improvement and design enthusiast. I guess that why it was so frustrating that cement board is just sooo thirsty. Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet . I still wet the walls first. A.Sean Gerolimatos, technical services manager for Schluter Systems, responds: With a few exceptions, unmodified thinset mortar is required for setting ceramic and stone tile over Kerdi membranes (800/472-4588, www.schluter.com ), as well as for bonding overlapped seams and connections to Kerdi drains. An additional layer of sealant can also be applied on the seams for extra protection and water resistance. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. 1. Your email address will not be published. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. Ditra is a 1/8-inch thick polyethylene membrane with a layer of anchoring fleece on the underside and a grid of square cavities on top. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. There's a really great manual (with diagrams) that makes this all easier to understand. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. If installing large format tiles (over 15"), be sure to give the Aquadefense at least 8 hours to cure first. When applying thin-set mortar, the manufacturers instructions should be followed closely. Why do small African island nations perform better than African continental nations, considering democracy and human development? Its important to note that Kerdi membrane is not a structural base layer, so plywood should be installed and reinforced as necessary based on load requirements. Removing bathroom tile from cement backerboard, Transition from KERDI membrane backed, to not backed. It's a lightweight polystyrene board faced with Kerdi that comes in various thicknesses that you can use in place of drywall or cement board. Sheets of glass mat gypsum are made from water-resistant silicone-treated gypsum, reinforced on both sides by fiberglass mats. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. Slap it up comb it out, leave every ridge tall and perfect. Kerdi is not a user friendly product, and when you shrink your working time down it is downright stressful. Everyone knows brick and stucco, but what about fiber cement and metal? You just need a hammer and wonderbar for the walls. If your going to do the job do it right, and give professional advice pls. Seems like I've been using the full measure of water the bag calls for, plus about 10%.-50 lbs of thinset at a time is too much for an amatuer. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top . I set the Kerdi with my hands, pat it into the thinset with my hands, then go over it with a 4" taping knife held at a low angle to embed the Kerdi in the thinset. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. No bulges either, but definetly no thin spots.-Not paying attention to the direction of the comb. Start by cleaning the cement board with a mineral oil soap; this will help reduce mold and mildew growth throughout the life of the shower. Sure, you can do it.just be sure to "spritz" or wet the hardi thoroughly before.it's pretty "thirsty.". The cement board needs to be clean, free of debris, and dry. When cleaning thinset off of Schluter membranes, the manufacturer recommends using a wet sponge and taking care to avoid any scoring or inconsistencies on the surface of the membrane. Why you use cement board? Look at it this way; Withe Kerdi, you either trust it or you don't. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. is that because water doesn't really hit that area?" - Lisa Jasper That's pushing it but should be fine. It is lightweight and made of expanded polystyrene. Gettin' a little delirious. First, felt paper is stapled to the floor and covered with expanded metal lath. Think about movement. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . Significantly more time and effort is required to ensure a quality bond when using a modified thinset adhesive with KERDI, and for this reason, it is usually not recommended. 3. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. However, if installed on drywall, it only protects one side. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. How to follow the signal when reading the schematic? I'm thirsty. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. Kerdi does admit that you can use cement board. Thanks Paul! Hi David. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, epoxy or marine paint over greenboard for my shower walls (not tile), Need advice on bathroom remodel - using hardiebacker boards, HELP! rev2023.3.3.43278. Cement board (cbu) is not waterproof, but is not damaged by being wet. Kerdi board, on the other hand, is an extruded polystyrene foam panel. First Kerdi can be installed on drywall or cement board. Kerdi Membrane is a product of Schluter systems. We sponge water onto the cement board. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). Following the instructions for the product being used and ensuring that all of the necessary steps are followed will help to ensure a successful installation. Tile Shower SurroundCement Backerboard Location? is the contractor creating a waterproof schluter-kerdi shower? You don't want to block off the end of the air chanel and trap half a sheet worth of air under there.-Not paying attention to the direction of my knife. Kerdi-Board panels allow the installer to prepare and create a broad range . About an argument in Famine, Affluence and Morality, Acidity of alcohols and basicity of amines. How can I find out which sectors are used by files on NTFS? How "tidy" does the kerdi band need to be? Additionally, seal the space around any pipes and fixtures that can be found in the shower. Yes, Schluter membranes can go over cement board. Yup! Can be cut to size easily using a utility knife. You provide the pitch during the tile set. In general, the Schlter system is typically more expensive than a cement board, and some people may find this an attractive option for its long lasting, easy to maintain qualities. @JimmyFix-it - hardiboard is not really porous unless it is completely saturated. Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. Firstly, it is important to ensure the wall is adequately prepared and that it is smooth, flat and free of defects.